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  • Question

  • A closely coiled helical spring of radius R, contains n turns and is subjected to an axial load W. If the radius of the coil wire is r and modulus of rigidity of the coil material is C, the deflection of the coil is


  • Options
  • A. A closely coiled helical spring of radius R, contains n turns and is subjected to an axial load W. I
  • B. A closely coiled helical spring of radius R, contains n turns and is subjected to an axial load W. I
  • C. A closely coiled helical spring of radius R, contains n turns and is subjected to an axial load W. I
  • D. A closely coiled helical spring of radius R, contains n turns and is subjected to an axial load W. I

  • Correct Answer
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    • Strength of Materials problems

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    • 1. Shear deflection of a cantilever of length L, cross sectional area A and shear modulus G, subjected to w/m u.d.l., is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 2. A three hinged arch is loaded with an isolated load 1000 kg at a horizontal distance of 2.5 m from the crown, 1 m above the level of hinges at the supports 10 metres apart. The horizontal thrust is

    • Options
    • A. 1250 kg
    • B. 125 kg
    • C. 750 kg
    • D. 2500 kg
    • E. 2325 kg.
      • Discuss
    • 3. The moment diagram for a cantilever whose free end is subjected to a bending moment, will be a

    • Options
    • A. triangle
    • B. rectangle
    • C. parabola
    • D. cubic parabola.
      • Discuss
    • 4. A long vertical member, subjected to an axial compressive load, is called

    • Options
    • A. a column
    • B. a strut
    • C. a tie
    • D. a stanchion
    • E. all the above.
      • Discuss
    • 5. A beam of length L supported on two intermediate rollers carries a uniformly distributed load on its entire length. If sagging B.M. and hogging B.M. of the beam are equal, the length of each overhang, is

    • Options
    • A. 0.107 L
    • B. 0.207 L
    • C. 0.307 L
    • D. 0.407 L
    • E. 0.5 L.
      • Discuss
    • 6. A shaft 9 m long is subjected to a torque 30 t-m at a point 3 m distant from either end. The reactive torque at the nearer end will be

    • Options
    • A. 5 tonnes metre
    • B. 10 tonnes metre
    • C. 15 tonnes metre
    • D. 20 tonnes metre
    • E. none of these.
      • Discuss
    • 7. The ratio of the flexural strengths of two square beams one placed with its two sides horizontal and the other placed with one diagonal vertical, diagonal, is

    • Options
    • A. 2
    • B. 2
    • C. 5
    • D. 7
      • Discuss
    • 8. Reactions at the supports of a structure can be determined by equating the algebraic sum of

    • Options
    • A. horizontal forces to zero
    • B. vertical forces to zero
    • C. moment about any point to zero
    • D. all the above.
      • Discuss
    • 9. The property of a material by which it can be drawn to a smaller section, due to tension, is called

    • Options
    • A. plasticity
    • B. ductility
    • C. elasticity
    • D. malleability.
      • Discuss
    • 10. The maximum deflection of a simply supported beam of length L with a central load W, is

    • Options
    • A.
    • B.
    • C.
    • D.
    • E.
      • Discuss

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